| Summary: | 碩士 === 國立清華大學 === 光電工程研究所 === 100 === Nowadays, two-way multiplexing optical transceiver modules are key components for passive optical network (PON) and optical interconnect. However, most of the devices are made by packaging active components such as diode laser, photodiodes, TIA and bulk optics like microlenses and WDM filters. A lot of package work and cost of individual components limit the price of each module and the operational speed.
The thesis focuses on developing a two-way dual-plexing transceiver module by using silicon integrated photonics. The main components include taper couplers、 rib waveguide, multi-mode interferometer (MMI), lateral and vertical mirrors, bonded with DFB lasers and photodiodes. The sending optical signal is 1310 nm and the receiving signal is 1490 nm. Firstly, we design a 2-by-2MMI to effectively separate the two wavelengths with a wide transmission bandwidth by using optical simulation software such as BPM and Fimmwave. We also analyze the polarization dependency and temperature sensitivity. Next we design the taper coupler as well as lateral and vertical mirror and estimate the insertion loss.
The device was fabricated in NDL. After the device was fabricated, we bonded laser diodes and photodiodes on the silicon module and measured the electronic and optics performance. The splitting ratio of two wavelengths was 6:4 (1310nm) and 9:1 (1490nm). The measured insertion loss is about 14dB. AC-modulated signals were sent into the device, showing that the device can work properly.
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